I was prescribed this medication about 4 months ago . I decided to read the info sheet, and it stated the upper age for takeing this meds was 75, im 70. It also stated that i might have symptoms like you describe, in fact my doctor also stated this face. Due to my age, and the fact that I have an enlarged prostate, I decided NOT to take this medication, because the last thing I needed was to be getting up more than the 4/5 times to go to the toilet, that I do now.
I decided to do something about it myself. I cut out all sugary things, cake, biscuits, ice cream, chocolate, and in the last 12 days have lost about 8 lbs in weight, and more importantly, only have to get up once per night, and my sugar readings are around 6 in the morning and 5-7 at night. wheras before they were 9 in the morning and 15 at night. Hope this help you.